Develop Reference

RelativeLayout View to right of TextView

I got following simple Layout. The problem can be reproduced in the android studio designer:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/x"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginEnd="#dimen/margin_small"
android:layout_marginRight="#dimen/margin_small"
android:text="#string/long_string"
android:textAppearance="?android:attr/textAppearanceSmall"/>
<CheckBox
android:id="#+id/y"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="#+id/x"
android:layout_toEndOf="#+id/x"
android:layout_centerVertical="true" />
</RelativeLayout>
This layout works fine if the text length of the textview is short. The checkbox is placed on the right of the textview. But if the text gets long and even wraps maybe, then the checkbox is pushed out of the view. It is not visible anymore. I would like that the checkbox is always visible on the right of the textview even, if it fills the whole width of the screen.
I tried to rewrite the layout with a LinearLayout which doesn't work either.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<TextView
android:id="#+id/x"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="#dimen/margin_small"
android:layout_marginRight="#dimen/margin_small"
android:text="#string/long_string"
android:textAppearance="?android:attr/textAppearanceSmall"/>
<CheckBox
android:id="#+id/y"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
</LinearLayout>
Do you know a trick to to achieve this with relative layout? I would somehow expect this behaviour from relative layout by default. Thanks ;)

This is working for me: make checkBox alignParentRight and make TextView toLeftOf it:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/x"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_toLeftOf="#+id/y"
android:text="This is very-very-very looooooooooooong stringgggg, very-very, long-long"
android:textAppearance="?android:attr/textAppearanceSmall"/>
<CheckBox
android:id="#+id/y"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_alignParentRight="true"/>
</RelativeLayout>
Edit. You can include this Relative Layout into other (parent) layout:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:gravity="left">
<TextView
android:id="#+id/x"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_toLeftOf="#+id/y"
android:text="this is veryyyyy yyyyyyyyyy yyyyyy yyy loooooo oooooooo ooon nnggggg gggg striiii iiiiin gggggg ggggg ggggggg ggg"
android:textAppearance="?android:attr/textAppearanceSmall"/>
<CheckBox
android:id="#+id/y"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_centerVertical="true" />
</RelativeLayout>
</RelativeLayout>
It's also working. If you put android:gravity="left" into Relative layout, it will locate its content on the left side.

One way out would be to put the textview and checkbox in a linear layout with orientation horizontal. Set width of checkbox to be whatever you want (a constant) and the width of textbox to be 0dp and layout_weight of 1.

You should put the property layout_weight to make your views (TextView and Checkbox) have a deff space in the screen instead of use a hard value
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<TextView
android:id="#+id/x"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.9"
android:layout_marginEnd="#dimen/margin_small"
android:layout_marginRight="#dimen/margin_small"
android:text="#string/long_string"
android:textAppearance="?android:attr/textAppearanceSmall"/>
<CheckBox
android:id="#+id/y"
android:layout_weight="0.1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
</LinearLayout>

I guess the desired layout is not possible by default. I tried to do this using RelativeLayout, LinearLayout and TableLayout. It is technically understandable that the these layout do not support that behaviour. The relative layout would have to explicitly respect the case that an element on the left or right is minimal visible inside the parent even it is placed to left or right. Another solution would be if the table layout would allow a column to consume the rest of the space but respects min width of other columns as well.
For my case i wrote a workaround. I used the initial relative layout of my question but set a max width to the textview using following calculation:
DisplayMetrics displaymetrics = new DisplayMetrics();
context.getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);
int displayWidth = displaymetrics.widthPixels;
That guarantees the checkbox to be visible. I know the solution could be hardly possible in scenarios where the given layout is embedded in a more complex layout.

RelativeLayout weight

In a layout resource XML, I have 3 RelativeLayout(s) which are inside a main RelativeLayout. The view will be shown vertically. These 3 RelativeLayout() are set next to each other, and I want them to fill the whole screen, doesnt matter what will be the screen size. My, layout view:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/backg"
>
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginTop="#dimen/top_mr_image"
android:src="#drawable/temp" />
<RelativeLayout
android:id="#+id/r1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_below="#+id/imageView1"
android:layout_marginLeft="10dp"
android:background="#drawable/r1bg"
android:layout_weight="1"
>
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_marginLeft="#dimen/txt_mr_right"
android:layout_marginRight="#dimen/txt_mr_right"
android:layout_marginTop="39dp"
android:text="S"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="#id/textView1"
android:layout_marginLeft="#dimen/txt_mr_right"
android:layout_marginRight="#dimen/txt_mr_right"
android:text="T"
android:textAppearance="?android:attr/textAppearanceLarge" />
</RelativeLayout>
<RelativeLayout
android:id="#+id/r2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignTop="#+id/r1"
android:layout_toRightOf="#+id/r1"
android:layout_weight="1" >
</RelativeLayout>
<RelativeLayout
android:id="#+id/r3"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignTop="#+id/r2"
android:layout_toRightOf="#+id/r2"
android:layout_weight="1" >
</RelativeLayout>
I set weight=1 and layout_width=0dp for each relativeLayout and this technique works with buttons, I thought the same will be with relativeLayout, seems my thoughts were wrong. Any idea?
UPD1: I have added an image of what I would like to have

RelativeLayout does not pay attention to android:layout_weight. (That's a property of LinearLayout.LayoutParams, but not of RelativeLayout.LayoutParams.)
You should be able to get the layout you want with a much simpler view hierarchy. It's not clear what you are trying to do, since the last two RelativeLayouts are empty. If you need a purely vertical organization, I'd suggest using LinearLayout instead of RelativeLayout.
EDIT Based on your edit, it looks like you want a horizontal layout of three compound views, each one clickable. I think something like the following will work:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<!-- First column -->
<LinearLayout
android:id="#+id/firstColumn"
android:orientation="vertical"
android:gravity="center_horizontal"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="..." />
<TextView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:text="text 1"
. . . />
</LinearLayout>
<!-- Second column -->
<LinearLayout . . . >
. . .
</LinearLayout>
</LinearLayout>
If the contents of the buttons aren't correct, you can replace the second-level LinearLayout views with RelativeLayout if that helps organize the layout better.

RelativeLayouts do not support weight. You need to use a LinearLayout as a parent container if you want to use weights.

Solution is very simple. I have been looking for weight distribution in relative layout.
It's a small trick for all these kind situations.
Use LinearLayout with android:orientation="horizontal"

You can use Horizontally oriented LinearLayout Manager in the Recycler View, and place each RelativeLayout in each item, of its Adapter.
The Link: How to build a Horizontal ListView with RecyclerView?
If your RelativeLayouts are set to a fixed width and height, that is to the size of the Screen, that you can get from DisplayMatrics, that will be OK.
The Link: Get Screen width and height
If the contents of your RelativeLayouts are different, then you can use getItemViewType() method.
Please see: How to create RecyclerView with multiple view type?
Happy Coding :-)

trying to align an image to the right margin and text to the left margin (Android application)

This is the layout I am using:
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:background="#color/background"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="30dip"
>
<LinearLayout
android:orientation="vertical"
android:layout_height="wrap_content"
android:layout_width="fill_parent" >
<RelativeLayout
android:orientation="horizontal"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:gravity="fill_horizontal"
>
<TextView android:id="#+id/poi_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textStyle="bold"
android:layout_alignParentLeft="true"
/>
<ImageView android:id="#+id/internet"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:src="#drawable/internet"
android:adjustViewBounds="true"
android:maxHeight="20sp"
/>
</RelativeLayout>
...
</LinearLayout>
</ScrollView>
However, the text appears aligned to the left but the image appears at the same height than the text (as expected), but horizontally centered in the screen. Why is it not aligned to the right ?
I tried with different combinations of the android:gravity attribute at the RelativeLayout without success.
The maxHeight attribute of the image is set using 'sp' units because I want the image to be proportional to the text it is accompanying. Is that correct ?
Thanks for your feedback.
UPDATE:
Thanks to the answer of #danh32 I managed to solve this using a LinearLayout instead of a RelativeLayout. But just out of curiosity: if someone knows what was the problem with the RelativeLayout of my example, I will be grateful.

Have you tried using textview's drawableRight attribute to display the image, instead of a standalone imageview? You should be able to change the textview's width to fill parent and set the drawableRight as your internet drawable.
<TextView android:id="#+id/poi_name"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textStyle="bold"
android:layout_alignParentLeft="true"
android:drawableRight="#drawable/internet"
/>

ScrollView Makes my background image bigger why?

I am trying to make a scroll view that has a nested relativeLayout view. The realative layout has a background image. When the realativeLayout is the only layout the background image is the size I want it to be.
When I add scroll view it makes the image bigger and I am not sure why and what properties I need to set to fix it.
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<RelativeLayout android:id="#+id/mainLayout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/background2"
xmlns:android="http://schemas.android.com/apk/res/android">
<TextView android:id="#+id/txtApplicationTitle"
android:text="My Application"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:layout_marginTop="5dp"
android:textSize="15dp"
android:layout_alignParentTop="true"
android:layout_alignLeft="#+id/txtAbout" />
<TextView android:id="#+id/txtPrivacyHeader"
android:layout_width="wrap_content"
android:text="#string/PrivacyHeader"
android:textAppearance="?android:attr/textAppearanceMedium"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_marginLeft="21dp"
android:layout_marginTop="94dp" />
<TextView android:id="#+id/Privacy"
android:layout_width="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="#string/Privacy"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_below="#+id/txtPrivacyHeader"
/>
</RelativeLayout>
</ScrollView>
// this is what I get (you can't tell but it is scrollable)
(source: gyazo.com)
// this how I want the SrcollView to look(this is the exact same code as above just without the ScrollView wrapping it)
(source: gyazo.com)
See how the top part has all of sudden grown so much.

Your ScrollView has its height set to wrap_content and your RelativeLayout has its height set to fill_parent. That means your ScrollView is going to expand to the entire view.

Textview has no width in RelativeLayout between 2 images

I have a relativelayout with an image, textview, image in that order. I have the left image with parent align left turned on. The right image has parent align right turned on. And the textview with align center parent turned on. The problem is that while everything is technically aligned correctly, the textview, while containing a value, has been reduced to basically a vertical line in the middle of the layout. Why isn't the textview keeping its width based on its content? Thank

try this
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="wrap_content">
<RelativeLayout android:layout_height="match_parent"
android:id="#+id/RelativeLayout01" android:layout_width="fill_parent">
<ImageView android:layout_width="wrap_content" android:src="#drawable/icon"
android:layout_height="wrap_content" android:id="#+id/ImageView01"
android:layout_alignParentLeft="true"></ImageView>
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content" android:id="#+id/TextView01"
android:layout_centerInParent="true" android:layout_centerVertical="true"
android:text=" sdfsdf sdhfhskdhfkh hsdkfhksdhfh shdfkhsdkhfkjsdh fhskdfhksdhfjk sdfhsdkhfkjsdfhkhasdhfksa fsakhdfhsdfhkshdf skdhfkshdfk"
android:layout_toRightOf="#+id/ImageView01" android:layout_toLeftOf="#+id/ImageView02"></TextView>
<ImageView android:layout_width="wrap_content" android:src="#drawable/icon"
android:layout_height="wrap_content" android:id="#+id/ImageView02"
android:layout_alignParentRight="true"></ImageView>
</RelativeLayout>
</LinearLayout>

check the width of ur imageviews..set the width of those 3 things as 'wrap content'.